Application not installed pops up folder that was preinstalled on my LG G3

[Android First-timer 2016]

Application not installed pops up when i press my games folder that was preinstalled on my LG G3 I have been an android user less than a week and accidentally deleted apps with the sweeper last night it worked fine before that.
I have prepaid vzw and there's a small green shape in lower right corner. I have tried to find app restore apps but I don't want to root my phone...any advice appreciated....also I no longer own a computer so plz no advice involving using one

 

[maclancer]

Are you able to factory reset the phone?

 

[Android First-timer 2016]

Won't that cause me to lose everything

 

[maclancer]

Won't that cause me to lose everything

Yes but if you backup first your stuff it will be painless.

 

[Android First-timer 2016]

I I did and shared it to my google drive will it keep all my stuff from play store too

 

[maclancer]

I I did and shared it to my google drive will it keep all my stuff from play store too

Mainly your pictures and settings. Google store will install back the apps that you already own. I think you need to select which apps you want back.